Soars, J., & Soars, L. (1991). Headway - Pre-intermediate: Teacher's book. Oxford: Oxford University Press.
استشهاد بنمط شيكاغوSoars, John, و Liz Soars. Headway - Pre-intermediate: Teacher's Book. Oxford: Oxford University Press, 1991.
MLA استشهادSoars, John, و Liz Soars. Headway - Pre-intermediate: Teacher's Book. Oxford: Oxford University Press, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.